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Dale D. I guess I must be thicker than what I always thought. What came on the pump was totally unsatisfactory.
The large is much better for me.
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Sebastian N. Fits and works as it should
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Eric A. The Medium size is a much better replacement (not the best though) for the original on my LYNX Electric Pump in my opinion.
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joe h. High Performance Replacement Silicone Penis Pump Sleeve Doughnut Black
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Juan V. Fits tube okay, but you need a super thick penis for it to keep suction and my penis is not pencil thin